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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
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package org.apache.james.mock.smtp.server;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ConcurrentLinkedQueue;

import org.apache.james.mock.smtp.server.model.Mail;

import com.google.common.collect.ImmutableList;

public class ReceivedMailRepository {
    private final ConcurrentLinkedQueue<Mail> mails;

    public ReceivedMailRepository() {
        mails = new ConcurrentLinkedQueue<>();
    }

    public void store(Mail mail) {
        mails.add(mail);
    }

    public List<Mail> list() {
        return ImmutableList.copyOf(mails);
    }

    public int count() {
        return mails.size();
    }

    public List<Mail> clear() {
        Mail mail;
        ArrayList<Mail> result = new ArrayList<>();
        while ((mail = mails.poll()) != null) {
            result.add(mail);
        }
        return result;
    }
}
